Fan Problem?
Thread Starter
Race Director
Joined: Oct 2011
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From: Dallas Texas
2025 C4 of the Year Finalist - Modified
Fan Problem?
So I noticed today while cruising around town, ambient temp at 89 fahrenheit. I wasn't running the AC and temps came up 228, which on a 93, is when the primary fan is turned on. Once on, it turns off at around 215. Well today, it got up to 230 and stayed there(just staying stopped in traffic), I could hear the fan running. I doubt, hope, the head gasket isn't bad. Car has 84k miles. Going down the highway, temp comes down quick.
I cleaned between the condenser and radiator last year.
Any ideas?
I cleaned between the condenser and radiator last year.
Any ideas?
Team Owner
Joined: Sep 2003
Posts: 25,373
Likes: 2,734
So I noticed today while cruising around town, ambient temp at 89 fahrenheit. I wasn't running the AC and temps came up 228, which on a 93, is when the primary fan is turned on. Once on, it turns off at around 215. Well today, it got up to 230 and stayed there(just staying stopped in traffic), I could hear the fan running. I doubt, hope, the head gasket isn't bad. Car has 84k miles. Going down the highway, temp comes down quick.
I cleaned between the condenser and radiator last year.
Any ideas?
I cleaned between the condenser and radiator last year.
Any ideas?
You could check the ECT resistance using either the FSM references or maybe this Delphi reference guide:
http://pe-ltd.com/assets/coolant_temp.pdf
Last edited by WVZR-1; Jun 10, 2018 at 02:59 AM.
Thread Starter
Race Director
Joined: Oct 2011
Posts: 16,083
Likes: 818
From: Dallas Texas
2025 C4 of the Year Finalist - Modified
Yes, ECT was replaced about two years ago. At 228, it turns the primary fan on only. If it goes to 236, then it turns on the secondary fan.
Team Owner
Joined: Sep 2003
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A friend used a ECT connector and a longer fabricated pig-tail with female terminals that enable him to unplug the ECT on all cars that use this type ECT to do resistance checks with his DMM. If a car is at his shop a couple days he makes it a habit to check ECT with car @ full 'cold'. A check @ full cold or even after shut down with 'KEY-OFF' you won't set DTC.
Thread Starter
Race Director
Joined: Oct 2011
Posts: 16,083
Likes: 818
From: Dallas Texas
2025 C4 of the Year Finalist - Modified
You didn't mention checking for 'both' fan operation. You only mention hearing 'fan running'.
A friend used a ECT connector and a longer fabricated pig-tail with female terminals that enable him to unplug the ECT on all cars that use this type ECT to do resistance checks with his DMM. If a car is at his shop a couple days he makes it a habit to check ECT with car @ full 'cold'. A check @ full cold or even after shut down with 'KEY-OFF' you won't set DTC.
A friend used a ECT connector and a longer fabricated pig-tail with female terminals that enable him to unplug the ECT on all cars that use this type ECT to do resistance checks with his DMM. If a car is at his shop a couple days he makes it a habit to check ECT with car @ full 'cold'. A check @ full cold or even after shut down with 'KEY-OFF' you won't set DTC.
Last edited by 1993C4LT1; Jun 10, 2018 at 09:16 AM.
